Dispatcher



A. D. ROLLINS DISPATGHER Oct. 9, 1934.

9 Sheets-Sheet l Filed Oct. 1l, 1926 .I llllmllllmlll l l mil/lll! Ellllll-llllll-,

A, D. ROLLNS DISPATCHER 9 Sheets-Sheet 2 Mn *GAA Filed Oct. 1l, 1926 A. D. ROLLINS Oct. 9, 1934.

DISPATCHER md oct. 11, 192s 9 Sheets-Sheet 3 Mal/Lana# @et 9;, E934.` A. D, RoLLJNs DISPATCHER Filed Oct. ll, 1926 9 Sheets-Shea?l 4 www5 A. D. ROLLINS Qct. 9, 1934.

DI SPATCHER Filed Oct. ll, 1926 9 Sheets-Sheet 5 ct. 9, 1934. v A, Q RQLLINS 1,976,248

DISPATCHER Filed oct. 11, 192s 9 sheets-'sheet s 0t.9, 1934. l A D, ROLLINS 1,976,248

DISPATCHER Filed Oct. ll. 1926 9 Sheets-Sheet 7 :amm/T y wsummm U42', T

A; D. ROLLINS oct. 9, 1934.

DISIATCHER 9 Sheets-sheet 8 Filed Ot. 11. 1926 A. D. ROLLINS DISPATCHER Filed Oct. Il. 1926 9 Sheets-Sheet 9 VM'LMM DISEATCHER Arch D. Rollins, Chicago, lli., Vassignor to Lothar Ederer, Chicago, lll.

Application October l1, 1926, Serial No. 140,721

21 Claims.A (Cl. 177-338) My invention relates to dispatcher and con- Figure 18 is a section on the line 18-18 of trolling means for timing and controlling fac- Figure 2; tory operations. @ne object of my invention is Figure 19 is a section on the line 19-19 of to provide improved factory control means Figure 2,'

whereby a central station may at all times be Figure 20 is a detail View of a modification. 6o

informed of conditions in the work in various Figure 21 illustrates-a. schematic layout of a parts of the factory. Another object is to procentral station and substations of which three vide such means whereby by a simple system of are shown. signals, `a central station may be kept informed Fig. 22 is a diagram of ,connection showing l0 as to the specic progress cf specific pieces or complete circuit diagram from the central station o5 jobs of work going on through the various parts and a sub-station. Y

of the factory. Another object is the provision Like parts efe lldieeted by like eheraetels of a central station, and a plurality of sub-stathroughout the specification and drawings. tions in quick and easy communication with the It will be understood that I employ a number central station, whereby the central station may 0f Sending and IeCeVIlg units, 0f Wheh 011e may 7,0

by signal receive from and impart to the subbe a central station and the others branch stastations necessary information. Other objects tions.4 Themechanisms ofthe various units are will appear from time to time in the course of similar, the diffelellees between them being the specification and claims. largely in matters of wiring and circuit.

I illustrate my invention more or less diagram- Referring for eXemple t0 FgllleS 1, 2, 3 and 75 matically in the accompanying drawings, 4, A generally indicates a base member, herein Whereinshown as of sheet metal, consisting of the bot- Figure 1 is a perspective view of one of the tom plate A1, the lllJSteIldDg circumferential Sending or receiving units; Side wall A2, the ledge A3 inwardly projecting `25 Figure 2 is a section on the line 2-2 of therefrom and Jthe Hnge A4 upwardly DlOjeCt- 80 Figure 1; ing from the ledge A3. The ange A4 is at each Y Figure 3 is a section on the line 3 3 0fr end inwardly and then upwardly continued, to Figure 2; form the upstanding wings A5.

Figure 4 is a section on the line 4 4 of At each end ofthe base A is positioned a block Figure 3 B, held in position for example by the screws S5 Figure 5 is a section on the line 5 5 of B1. In itis rotatably mounted the loin B2, pro- Figure 3; vided with a key aperture B3 at its outer end and Figure 5 is a plan View with parts removed 0f with a hook element B4 at its inner end. B5 is the interior mechanism of the unit with the any Suitable member for preventing axial movehousing removed; ment of the pin B2, the pin being grooved as at 90 Figure '7 is a bottom view of the same mecha- B- The Well A4 S eut @Way 3S all B7 150 permit l nism; the rotation of the hook B4.

Figure 8 is a section on the line 8 8 of Fig- Resting upon the ledge A3 and centered by the ure 6,- flange A4 is any suitable housing member, gen- 40 Figure 9 is a section on the une 9 9 of Figerally indioatedas C, including a generally ver- 95 ure 6; tical rear Wall C1, a short vertical front wall C2,

Figure 10- is a section on the line 10-10 of a rearwardly inclined forward face C3, a hori- Figure 8; zontal tcp C4x and end walls C5. Positioned in Figure l1 is a section on the line 11--11 of the forward front face C3 is any suitable index- Figure 8; ing mechanism, including the fixed stop D and 10o Figure 12 is a section on the line 12--12 of the rotating member D1 provided with the various Fglll'e 6; apertures D2 overlying the fixed indicating sym- Figure 13 is a section on the line 13-13 of bols D3. DL1 is a push button positioned in the Figure 12; same inclined forward face C3 of the housing and Figure 14 is a. section on the line ll--l of D5 is the glass or lens preferably red. 105

Figure 13; The housing face is forwardly upset as at Dr1 Figure l5 is a rear view of an indexing device; and apertnred as at D3, the upset portion being Figure 16 is a section on the line 16-16 of adapted to receive a pane of glass D9 to close Figure 12; such aperture. D10 are headed pins on the in- Figure 17 is a detail view of a Contact Sleeve; side of the ends of the housing, such pins being 110 adapted to be engaged by the hooks or latches B4.

Mounted on the bottom of the base member A is the block E of insulating material upon which are a plurality of contact strips E1 held for example by the screws E2, the block as a whole being held in position by the screws E5. Mounted on the inside of the rear wall of the housing are a plurality of holding clips E5 adapted to receive the contact holding plugs E5 of insulating material. Mounted in such plugs are the spring pressed plunffers or pins E7, adapted to engage the contact strips E1 when the housing is in position on the base. E5 are any suitable conductors, commimicating with the plungers E1, which extend to the dial mechanism above described.

Mounted between the upwardly projecting wings A5 is a supporting or cradle mechanism comprising end plates G, connected by the transverse members G1 G2 riveted or otherwise secured thereto. The member G1 is anged at front and rear as at G3 G4, the lower ilange G4 being substantially shorter than the upper ilange. The member G2 is flanged at each edge as at G5 G5. The flanges G5 G5 G5 are notched at intervals as at G7, the width of the flanges at the bottom of the notches being substantially equal to the ange G4. The end members G are slotted at three points as at G10, these slots overlying the transverse slots G11 in the wings A5, the intersecting slots permitting adjustment of the relation of the opposed plates. G12 are any suitable securing bolts with the nuts G14, the inner washer G15 and the outer washer G15, as shown ln Figure 19.

Secured to the upper edge of the lower side of the member G1 are a plurality of blocks H of insulating material apertured to receive a plurality of contact sleeves H1 which are upwardly slotted as at H2, as shown in Figure 1'7. Each such sleeve has secured at its lower end, as shown in Figure 16, any suitable wire or conductor.

Secured to the lower edge of the rear of the member G1 are a plurality of blocks H5 similar to the blocks H and provided with similar slotted contact sleeves H1.

Riveted or otherwise secured to the member G2 adjacent the upper portion of the bottom thereof is the bracket member, J, to which is secured the insulating block, J1, to which are secured the clip and conductor members, J2, associated with which is a light, J5, herein shown as a standard telephone light. rIhe light, J5, is centered beneath the glass or lens D5, earlier mentioned and secured adjacent the opposite end of the member G2 is the similar bracket member, J5, with the insulating block, J7, in which is mounted a double switch comprising three stationary leaves or contacts, J5, J5, J1, between which are located the two movable leaves, J11, J12, provided with the insulating spacing members, J15, J14. It will be understood that the switch is positioned beneath the switch button, D4, and that a pressure upon the bottom, D4, will move the switch leaves J11, J 12.

Secured to the lower face of the member, G2, intermediate the brackets, J and J5, are two identical quick acting magnets, K, K1, each comprising a bracket member, K2, having an outwardly turned flange, K3, to which is secured a Contact block, K4, and theswitch bracket, K5. K5, K4, K5 are herein shown as secured together by the screw, K5, the inner end of which serves also to support and position the magnetic coil,

"K", by axial engagement with its core, K5.

Mounted on the switch bracket, K5, of the quick acting magnet K1, in which are mounted the switch leaves, K15, K11, K1o being provided with a terminal insulated block, K12 are ears projecting outwardly from the switch bracket, K5. To them is pivoted the switch controlling lever, one arm of which, K15, is adapted to engage the block, K12, on the leaf, K15, and the other arm of which, K15, is adapted to be drawn to the core, K5, of the electromagnet, K7, in response to its electric actuation. The leaf, K15, is in such case thrust into Contact with the leaf, K11, the switch being thus closed in response to and during actuation of the electromagnetic coil, K7. The magnet K has mounted on the insulating 'block K9 the switch leaves K25, K21.

Secured to the opposite side of the member, G2, adjacent one end thereof is the insulating block, L, held for example by the screws, L1, and provided with nine contact sleeves, L2, substantially identical with the contact sleeves, H1, earlier described.

Secured to one of the end plates G of the cradle, for example as shown in Figures 3, 5 and 6, is a bracket member, M, mounted upon the flange, M1, inwardly projecting from the plate, G. The bracket carries the electromagnet, M2, with the core, M2. M4 is a shaft rotatably mounted in the plates, G, and extending from end to end of the cradle, it being held at the ends for example by the screws, M5, passing through the plates, G. Mounted thereupon is the arm, M5 and the plate M7, opposed to the core, M5, of the electromagnet. It is to be understood that actuation of the electromagnet will draw the arm, M5, toward the core, M5, and thus rotate the shaft, M4. M5 indicates a stop member with the terminal, M2, adapted to limit the downward movement of the lever, M5, when it drops, in response to gravity, during inactivity of the magnet. It will be understood that the shaft, M4, carries a plurality of levers, M10, the purpose of which will later be indicated.

Mounted upon the members, G1, G2, and seating in the slots, G7, are a plurality of indicator units and a single advance unit. Indicator units 120 are identical and but one will be described. Each such indicator unit, shown in detail for example in Figures 8, 9 and 10, consists of a side plate, N, with a forward flange, N1, at right angles thereto and an upper flange, N2, likewise at right angles 125 to the plate. Mounted upon the iiange N2 is the bracket, N5, carrying the electromagnetic coil N4, with its core, N5. It also carries the insulating block, N5, carrying three contact pins, N7, adapted to engage the contact sleeves, H1, in the block, H. 13g This is shown particularly in Figures 6, 7 and 12.

Pivoted to the plate, N, as at N5, is the lever, N5, having a portion, N10, opposed to the core N5, of the electromagnet. At the lower end of the lower arm of the lever is pivoted as at N11, a supplemental lever having an upper arm, N12, and a lower` arm, N15, having a rocking or cam surface, N14, opposed to a lug, N15, on the plate N. The upper arm of the lever N12, is normally moved to the right, as shown in Figure 9, by the tension spring, N15. It carries a dog, N17, normally moved in clockwise direction by the spiral spring, N15, against the guide or stop, N19. N2o is a stop to limit the movement of the dog. N22 is a stop on the plateN to limit the turning of the lever N5.

O is a shaft fixed upon the plate N upon which is mounted a sleeve, O1, to which is xed a ratchet Wheel, O2.Y Counter-clockwise direction of rotation of the sleeve and ratchet wheel is prevented by the pawl, O5, pivoted as at O4, to the plate and 150 il l atteint it* w iluvwltwww normally held in operating position by the tension spring, O5. It will be understood that at each actuation of the electromagnet, N4, the member, N10, will be drawn to the core, N5, over the lower'- arm of the lever, N9, removed to the lever, as shown in Figure 9, the lever arm, N13, will engage the stop, N15, and rotate about the pivot, N11. The dog, N18, will be thrust along the guide, N19, to engage the ratchet teeth of the wheel, O2, imparting to the wheel and sleeve, O1, a clockwise direction. The stop, N20, limits this movement to a distance substantially equal to the length of one of the ratchet teeth, the pawl, O3,v being over reaching by one tooth and engaging the next tooth to prevent rotation of the sleeve in the opposite direction. It will be understood that the reset shaft, M4, with its lever, M10, will upon its counter-clockwise rotation as shown in Figure 9, move the pawl, O5, into inoperative position, thereby releasing the ratchet wheel and permitting retrograde rotation of the sleeve, O1.

The sleeve, O1, as shown in Figure 9, the control of the rotation of which has above been described, carries the following indicator mechanism: P, P1 are cupped wheels with the outwardly turned rims or anges, P2, upon which is positioned the indicator strip, P3. P4 is a stop element associated with the wheels, P, P1, and adapted to engage the fixed stop, P5, on the plate, N, at the limit of rotation of the wheels. The stop, P4, also engages the insulated block, P5, on the end of the switch leaf, P1, mounted in the insulating block, P5. Referring to Figure 10, when the stop, P4, is engaging the xed stop, P5, and prior to rotation of the indicating assembly, it is in engagement with said block, P5, and is holding the switch leaf, P1, out of Contact with the opposite switch leaf, P9. As soon as the assembly is rotated and as soon as the stop, P4, clears the block, P5, the switch is closed and remains closed until the said stop returns to its initial position. The squared portion, O10, of the shaft, O, carries the plate, P10, thereby fixed against rotation. Between the plate, P10, and the sleeve, O1, is the spiral spring, P11, adapted normally to rotate the sleeve, O1, in counter-clockwise direction, as shown in Figures 9 and 11, this tendency being normally checked by the interposition of the pawl, O3. P12 is a pin which passes through the wheels, P, P1, the stop, P4, and the ratchet wheel, O2, and through flanges, O11, O12, on the sleeve, O1, thus holding the entire assembly against relative rotation.

It will be understood that the indicator member P3, may be provided with any desired symbols, the indicator strip and the wheels upon which it is mounted being aligned with the glass, D1, the forward flanges, N1, of the plate, N, being cut away as at N21 to render the signals visible.

Figures l2, 1S and 14 illustrate the advance unit adapted to control the advance or movement of the successive individual indicator units in response, for example, to dialing. The advance units include a frame structure substantially identical with that of the indicator units, including the side plate N with the forward flange N1 at right angles to it, and the upper ange N2, also at right angles to the plate. The same bracket N3 carries an identical electro-magnetic coil R, with its core R1 and the insulating block R2 with the three contact pins on each side, adapted to engage the contact sleeves H1 in one of the blocks H.

Similarly, the lever N9 is pivoted as at N9 to the lplate N and supports a portion N10, opposed to the core N5 of the electro-magnet. The lower? end of the lever has pivoted to it, as at N11, the supplemental lever with the upper arm N12 and the lower arm N13, with. its rocking or cam surface N14 opposed to the lug on the plate. The upper arm N12 is normally moved to the right, as shown in Figure 12 by the tension spring N16 and carries the dog N11.

S is a shaft secured to the plate and S1 is a reduced shaft portion forwardly extending from the end of the thicker portion of the shaft. The reduced portion is squared at the end as at S2r and provided with a look spring clip S3.

Surrounding the shaft S, S1 is the sleeve? S4, conforming thereto. Mounted about that por-- tion of the sleeve which surrounds the thicker` portion S of the shaft is the ratchet wheel S5, the spacers S5, the stop member S1 adapted to engage the fixed stop P5, on the plate N, and the indicator discs S5 with the indicator strip S9 the structure being substantially the same as that, shown in Figure 11 and employed for the individual indicator units.

The portion of the sleeve S4 which surrounds the reduced portion S1 of the shaft carries a number of elements below described and terminates in a squared portion S10 Aupon which is mounted a disc S11 surrounded by the spring: S12 the inner end of the spring penetrating a slot S14 of the disc and the outer being secured to tie member S15 inwardly projecting from the wheel S15 fixed on the square portion S2 of the shaft- S and held in position by the upper spring lock member S5. The stop member S1 is adapted to engage the fixed stop P5 on the plate N and to actuate the switch levers S10, S19, identically as the stop member P4 actuates switch levers P1 and P9.

The parts above described are substantially identical in form and operation to the corresponding parts shown in Figure 11 and found in the individual indicator units.

Mounted' on the lower portion of the shelf N2 is the sheet metal bracket T to which is secured the block T1 of insulating material centrally apertured as at T2 to permit the passage of the reduced portion of the sleeve S4. Secured to the outer face of the block T1 are the shield members T3 T4 positioned back to back, as shown in Figure 13, the outer rim T5 of the member T4 extending outwardly around and surrounding' the spring S12.

Mounted on the block S4 concentrically about the central aperture S2 is the contact ring T5 secured for example by the screws T1 and having the outwardly projecting rim or flange T8. Mounted concentrically about it are a plurality of contacts T9 each including the hollow sleeve T10 passing through the block T1, the outwardly projecting portion T11 and the inwardly turned portion T12. T14 is any suitable wiring connection extending from such contacts to the contact pins T15 in the block T15 secured to the bracket T. t will be understood that there is a pin and a wiring connection for each of the indicato-r units.

Mounted about the reduced portion of the sleeve S4 are any suitable insulating rings U held in position by the locking member U1 and having mounted thereupon three wipers U2, U4. The wiper U2 is adapted to wipe the outer face of the flange T5. U2 and U4 wipe the opposite sides of the inwardly turned portions T12 of the contact member T9.

Referring to Figure 20, which is a modified soi form of the operation of the structure shown for example in Figures 8 and 9, the upper arm N12 .of the supplemental lever pivoted to the lower end of the lever N9 has pivoted to it a dog N25 having an upwardly extending ear N25 to which is secured the single tension spring N27 which carries out the function both of the springs N15 and N13, as shown in Figure 9, drawing the lever arm to the right and imparting a clockwise movement to the dog N25.

As illustrated in Figure l5, the indexing device has at the rear a plurality of spring contacts insulated from each other, of which two V1, V2, are operated by the cam V3 which in turn is actuated by the turning of the rotating member D1. The cam V3 is positioned so as to hold the spring contacts V1, V2 apart when the indexing device is at rest. The spring contacts V4, V are closed and opened by the lever V5 in the usual manner. r`She spring contacts V2 and V5 are electrically connected as at V7.

W indicates a switch-board panel of insulating material. Mounted thereon are a plurality of multiple jacks W1 and pilot lights W2, each pair representing a different substation which may be identiiied by numbers, as shown. Secured to each jack W1 are a plurality of wires later to be described and generally indicated as W3, which extend to the substations X.

Y is the control station having a phoneplug Y1 connected to the wire cord Y2.

The use and operation oi my invention are as follows:

One of the objects of my invention being to provide improved factory control means, whereby a central station may at all times follow up the work m various parts of the factory and wherebyvmeans of communication between a central station and sub-stations are provided, I

.have developed a system whereby from a plurality of sending stations information may be sent to a central receiving station, it being understood that the receiving station can send and the sending stations can receive. I thus provide a complete system of factory communication. The general operation of the device will be clear from Figure 22, a schematic layout or wiring diagram in which only two stations are shown, one of which may be considered the main receiving or central station and the other one of the supplemental stations.

In practice, each station includes a receiving and sending mechanism, housed as 'shown for example in Figures l and 2, and 21, with a dialing mechanism on the forward face of the housing C and a transparent window adapted to permit the observation of one symbol at a time upon each of the plurality of indicating cylinders or strips employed.

When an operator wishes to send a message from any o1" the substations, he presses the button D4 which actuates the switch leaves J 11, J12. The eilect is to close the 'circuit through the pilot light W2 on the switch-board W, along the con- Vductive line d from the battery d1 along the conductor d2, the light W2 and line d3, through the leaves J3, J11 back along the conductor d1'and back through d5 to the battery d1. The light W2 is preferably positioned only at the central station switch-board, and serves to indicate that an operator at a substation is trying to communicate. The central operator then takes the plug Y1, which maybe a regular telephone plug connected to the central station, and plugs it into the mul- .tiple jack W1, thereby closing the circuit through thev line d from the battery d1, the jack W1, line e, Wire e1 through the light J3 showing through the red lens D5 on the face of the substation X, the wire e2, spring leaves J3, J11 back through the Wire d3, the jack W1, wires e3, d5 to the battery d1. At the same time the circuit is closed through the pilot light W2, independently of the closure of the manually operad switch button D4, the circuit being made from the battery d1 through the wires d, d2, pilot light W2, wire d3, the jack W1, lines e3, d5 back to the battery. At the same time the substation and the main station are so connected that any actuation of the dial of the substation will actuate the identical indicating members and actuate the advance units of the two stations identically so that identical signals will appear` at both stations, thus enabling the sender to check his message.

Accordingly when the light J3 is actuated, the sender, knowing that the connection has been made, proceeds to dial his message by actuating the rotating member D1 with its apertures D2 overlying the Xed indicating symbols D3. The operator places his nger in the aperture over the desired number or letter to be indicated and rotates the member D1 until his finger engages the stop D. The operation of this mechanism being the same as that commonly employed in that of automatic telephones, I have made no detailed description of this feature.

By rotating the member D1 in clockwise direction, the arm V5 moves out of contact with the leaf spring V4, thereby closing the contact leaves V4, V5 and making electrical connection through the relay coils K1 of the station X and coil k1 of the central stationY. Acircuit is established from the battery d1 through the line d, multiple jack W1, line e, wire f, the relay magnet K1, wire f1, f2,

the spring leaf contacts V4, V5 of the substation indexing dial, lines f3, d4, d5 back to the battery d1. Electrical connection is also made from the battery d1 through the wires d, f4, the relay magnet k1 of the central station Y, lines f5, f5, the switch-board jack W1, lines f7, f2, contact leaves V4, V5, lines f3, d1, d5 back to the battery LZ1. Magnetizing of relay coil K1 causes switch leaves K10, K11 to be closed, thereby establishing an electrical circuit from the battery d1, wire d, switch board jack W1, wires e, f, contact leaves K11, K10, the line g, magnet R, lines g1, d5 and back to the battery. Through this impulse the magnet R attracks the upper portion N15 of the lever N3, which actuates the arm N12, which by its rocking motion oi its cam surface N14 of the lower portion N13 against the lug N15 moves the dog N17 to the left, thereby engaging a tooth of the ratchet wheel S5 and turning the sleeve S4- in clockwise direction. As soon as the assembly is rotated and as soon as the stop S7 clears the switch contacts S13, S13, the switch is closed and establishes an electrical circuit which will be later described.

By turning of the sleeve S4, the wipers U3, U1 are moved into contact with a contact sleeve T9, thereby establishing an electrical connection through the magnet N1 of the indicator unit farthest to the left. Through magnetizing of the relay coil k1 oi lthe central station, the Contact leaves k1, Icll are closed and thereby established a circuit from the battery d1, wires d, f1, Contact leaves k1, 7611, wire g3, the magnet coil 7' of the advance unit of the central station Y, wires g4, g5, d5 and back to the battery. Through this electrical impulse, the magnet r of the advance unit of the central station causes the switch leaves S19, S18 to be closed and moves wiper a4 into contact with a contact sleeve t9, connected by wire i8 with the magnet 11,4 of the indicator unit farthest to the left. By the closing of the switch leaves S19, S18 electrical connection is made from the battery d1 through the wires 01,44, g8, the red light 78 of the central station Y, wire gl, contact leaves S18, S19, wires g8, g4, g5, d5 back to the battery.

As soon as the operator of the substation X allows the rotating member D1 oi the dial to return to its original position, the cam V3 rotates .and closes and opens contact leaves V1, V2 as :many times as the number dialed. Electrical lfcircuits are thereby made from'the battery d1, wire d, jack W1, wire c, relay magnet K oi the substation X, wires h, h1, contact leaves V1, V2 of the dial, wires f2, d4, d5 back to the battery, and .another from the battery d1 through the wires d, je., h2, relay contacts le20, 1G21, wire i2, wiper a4 of the advance unit of the central station Y, wire i3,

` magnet n4, wires g4, g5, d5 and back to the battery.

;K1, k1 are energized simultaneously and are in parallel. Likewisedial Z is wired in parallel with the dial at station X, through f1 and f6. Also g5 supplies negative battery to dial Z. Likewise d5 supplies direct negative battery to dial at station'X. f'

iWhen the cam V3 on either dial X or Z is rotated a number of times predetermined by the digit dial, the contact springs V1 and V2 close. V2 receives negative batteryy through d5, f3 and suppliesnegative battery to V1, thence through h1, wherein the current divides into h and h6. The current passing through h energizes relay magnet coil K, returning to battery through e, through d, to positive battery; likewise hs through jack W1 through h4 in the plug Y1 through h3, thence to 7c relay magnet, thence through f4 to positive battery d.

Thus relay magnets K, k receive impulses'from either dial X or Z which cause these relays in turn to supply impulses from positive battery through d, through jack W1, through e, through contact K21 to 1c21, thence through contacts on armature of relay K2o and le20, through z2 and i, thence through wiper arm U4, a4 on each advance unit through the wire i8, il on each station X and Y, through the indicator unit magnet N4, n4 to negative battery through g1 and g4 and d5.

The so-called reset magnets M2, m2 are operated in parallel any time that the buttons m4 and D4 are depressed. 'Ihe leaf springs m5 and J9, J11 receive energy as described above..r This parallel operation oi electro-magnets M2 and m2 only occurs when the plug with the cord attached is inserted in jack W 1 since the wire and contact 78, j? through i9 provides the paralleling of the electromagnets M2, m2 as herein set forth. Likewise the wire i5 leading to plug contact :i8

Magnetizing of the magnet coils N4, 11.4 causes the switch leaves P", P9 of the substation X and the contact leaves p7, p8 of the central station Y to be closed, thereby establishing two circuits,

Vnates upon an individual line jack W1.

one through the pilot light W2 which will be later described, and another through the light 7'80 of the central station.

Each successive dialing will advance wipers U4, a4 to the next following contact sleeves T9, t9 each of which is connected by a wire i1 or i3 with va. magnet N4 or n4 or" an indicator unit, as shown in Fig. 22.

Should the operator of the substation X desire to correct a message, by pressing of the pushr but- Yto the battery. Another circuit from the battery d1 through the wires d, f4, 7'8, reset magnet m2 of the central station Y, wires i4, i5, contact :i6 or" the telephone plug Y1, spring contact 72 of the jack W1, wire i8, through the jack W1, wires 9'9, i2,

spring contact J1", J12, wires d4, d5 back to the battery.

After receiving the message, the operator of the central station presses the push button m4 of the receiving and sending device, thereby closing a switch, generally indicated as m5. This switch is similar in construction to the one` employed at the substation, but has only two spring leaves. By closing of the switch m5, electrical circuits are made, one from the battery d1 through the wires d, f4, g8, i8, reset magnet m2, wire i4, reset switch m5, wires m8, g5, d5 and back tothe battery. Another circuit from the battery d1 through the wire d, jack W1, wires e, 7'1, reset magnet M2, wire 9'9, jack W1, wire i8, spring contact :il oi the jack, contact :i8 of the plug Y1, line i5. reset switch m5, wires 'm8, g5, 'd5 back to the battery.

After resetting of the station, operator oi the central station pulls out the plug Y1. Should any of the indicator units or advance unit of a substation fail to function properly and any oi the spring contacts Pl, P8 or S18, S18 keepin contact with each other, the pilot light will stay alight, `being in circuit with the battery d1 through the wires d, d2, pilot light W2, wires d8, m10, spring leaves P8, @P7 or S18, S19, wires m11, g1, d5 and back to the battery.

The equipment is laid out in such a manner that any one of the various outlying stations X termi- By inserting the plug Y1 in any of the jacks W1 the central stationrreceiving and recording equip'- ment is connected to any one of the X stations as desired, so that a message may be transmitted from any outlying station to the central station. Likewise a message can be transmitted from the central station to any outlying station.

I claim:

1. In a two-way dispatcher system, a central station, a plurality of sub-stations, an impulse generator at each station, visual signal indicating devices associated with each station, signal actuating means associated with each station, and means for actuating selectively the indicating devices of one of said stations in response to actuation of the signal actuating means oi one of said stations.

2. In a two-way dispatcher system, a central station, a plurality of sub-stations, an impulse generator at each station, visual signal indicating devices associated with each station, signal actuating means associated with each station, means forV selectively placing the central station in connection with individual sub-stations and iss means for actuating selectively the indicating devices of said central station and the sub-station in which it is in connection, in response to the actuation of the signal device of one of them.

3. In a two-way dispatcher system, a plurality of stations, an impulse generator at each station, visual signal indicating devices associated with each station, signal actuating means associated with each station, and means for actuating selec- ,tively the indicating devices of one of said stations in response to actuation of the signaling device of one of said stations.

4. In a visual two-way dispatcher system, a central station, a plurality or sub-stations, animpulse generator at each station, conductive circuits and means for closing such circuits between the central and the individual sub-stations, signal devices associated with each station, and adapted to transmit a complete message in unison with the signal devices of the stations in which they are in circuit, and actuating means, on the individual stations adapted to actuate the signal rdevices of the station of the actuating means and of a station in circuit therewith.

5. In a two-way dispatcher system, a central station, a plurality of sub-stations, an impulse Ygenerator at each station, visual signaling means associated with each station, signal actuating means associated with each station, a switchboard associated with the central station, conductors extending fromsaid sub-stations to said switchboard, and means associated with the main station for selectively closing a conductive circuit through said switchboard and said conductors, lthrough the central station, and one sub-station.

6. In a two-,way dispatcher system, a central station, a plurality of sub-stations, an impulse generator at each of such stations, visual signaling meansassociated with each station, signal actuating means associated with each station, a switchboard associated with the central station, single circuit conductors extending from said substations to said switchboard, and means associated with the main station for selectively closing a conductive circuit through said switchboard and said conductors, through the central station, and one sub-station, signals on said switchboard adapted to indicate calls from the individual substations, and actuating means therefor, associated with said sub-stations.

'7. In a dispatcher system, a central station, a 'plurality of sub-stations, visual signaling .devices associated with each station, said devices including a plurality of separately and successive- Vly actuable rotating signal drums, each such drum being provided with a plurality of signals,

a signaling impulse transmitting member associated with each station, conductive circuits and means for closing such circuits between the central station and one sub-station and means for rotating said drums in response to actuation of said transmitting members, means for transmitting actuating impulses to the separate indicators in predetermined order, said individual signaling drums of the central station and of the substation in circuit therewith being adapted in response to actuation of the signal transmitting member of one of them, to be rotated in unison to indicate a signal corresponding to thev signal transmitted.

8. In a dispatcher system, a central station, a plurality of sub-stations, visual signaling devices associated with each station, said devices including a plurality of separately and successively actuable rotating signal drums, each such drum being provided with a plurality of signals, a signaling transmitting member associated with each station, conductive circuits and means for closing such circuits between the central station and oneV sub-station and means for rotating said drums in response to actuation of said transmitting members, said individual signaling drums of the central station and of the sub-station in circuit therewith being adapted in response to actuation of the signal transmitting member of one of them, to be rotated in phase to indicate aV signal corresponding to the signal transmitted, reset means associated lwith the individual stations and adapted to re-set the signaling devices to their original position, and actuating maans, associated with each station, adapted to aotuate the re-set mechanism of such station and of the stations in circuit therewith, whereby a new series of signals may be transmitted.

9. In a station for a dispatcher system, a plurality of indicator drums, a plurality of symbols upon each said drum, 4means for step-ping up each said drum by electrical impulses, a signaling means associated with said station and having kassociated with it aplurality of symbols corresponding to the symbols upon said drum, means for placing said signaling means in electrical actuating connection successively with the step-up mechanism of the individual signal drums, including an advance member having a plurality of contacts and a. wiping member, a conductive connection between each said contact and the r0- tating means for one of said drums, and a conductive connection between the wiping member and the signaling means, and means for advancllO ing said wiping member in response to each actuation of said signaling mea-ns, and means for actuating said rotating means and advancing each said drum, in succession, in response to actuation of the signaling means.

I0. In a station for a dispatcher system, a plurality of indicator drums, a plurality or" symbols upon each such drum, means for stepping-up -each said drum by electrical impulses, adapted to'A advance it step by step, signaling means associated with said station and having -associa-ted with it a plurality of symbols corresponding to the symbols upon said drum, means for placing said signaling mems in lelectrical actuating connection successively with the step-up mechanism of the individual signal drums, and means for actuating said rotating means and for advancing each said drum a predetermined number of steps, in response toV actuation of the signaling means.

11. In a dispatcher system, a plurality Distations, and means for placing two of said stations in electric connection with each other, a plurality of indicator drums associated with each station, a plurality of symbols upon each said drum, means for stepping up each said drum by electrical impulses, a signaling means associated with each said station, means for placing said signaling means in electrical actuating connection successively with the step-up mechanism of the individual signal drums, of the station with which it is in connection, and means for actuating said rotating means and advancing said drums, in succession, in response to the actuation of such signaling means.

12. In a dispatcher system, a plurality of stations, and means for placing two of said stations in electric connection with each other, a pluralityofA indicator drums associated with each station, a magnet associated with each indicator its ly with the circuits for the magnets of the sucdrum, a lever controlled by said magnet and adapted torotate said drum a predetermined distance in response to each movement of the lever, an electric circuit for each such magnet, signaling means associated with each said station and means responsive to actuation of said signaling means, for closing and breaking said magnet circuits, and means for placing said signaling means in actuating connection successively with the circuits for the magnets of the successive drums.

13. In a dispatcher system, a plurality of stations, and means for placing two of said stations in electric connection with each other, a plurality of indicator drums associated with each station, a magnet associated with each indicator drum, a levery controlled by said magnet and adapted to rotate said drum a predetermined distance in response to each movement of the lever, an electric circuit for each such magnet, signaling means associated with each said station and means responsive to actuation of said signaling means, for closing and breaking said magnet circuits, and means for placing said signaling means in actuating connection successivecessive drums, including an advance member having a plurality of contacts and a wiping member, a conductive connection between each said 2- contact and one of said magnets, a conductive connection between the wiping member and the signaling means associated with said station and wiping member in respo-nse to each actuation of signaling means, and means for advancing said wiping member in response to each actuation of said signaling means.

14. In a station for a dispatcher system, a pluv` rality of indicator drums, a magnet for each such drum, a lever controlled by said magnet and adapted to rotate said drum a predetermined distance in response to each movement of the lever, an electric circuit for each said magnet,

adapted to make and break the magnet circuits, and means for placing said signaling means in connection successively with the individual magnet circuits, including an advance member having a plurality of contacts and a wiping member, a conductive connection between each said contact and one of said magnets, a conductive connection between the wiping member and the signaling means, and means for advancing said said signaling means.

l5. In a two-way communication system having identical transmitting and receiving units, a

, station for a dispatcher system, a plurality of indicator drums, a plurality of symbols upon each said drum, means for stepping up each said drum by electrical impulses, a signaling means associated with said station and having associated with it a plurality of symbols corresponding to the sylmbols upon said drum, means for placing said drum, means for stepping up each said drum by electrical impulses, a signaling means associated with said station and having associated with it a plurality of symbols corresponding to the symbols upon said drum, means for placing said signaling means in electrical actuating connection successively with the step-up mechanism of the individual signal drums and means for actuating said rotating means and advancing each said drum, in succession, in response to actuation of the signaling means, and reset means, associated with said station and adapted to return said drums to their original position, and means associated with such station for actuating said reset means, whereby a new series of signals may be transmitted.

17. In a dispatcher system, receiving and dispatching stations each having a plurality of indicator drums, yielding means normally tending to hold said drums in non-indicating position, means for advancing said drums by electrical impulses into indicating position, signaling means and mechanism for placing said signaling means in actuating connection successively with the individual signal drums and means for actuating said drum advancing means to said drums, in response to actuation of the signaling means, and reset means adapted to release said drum advancing means and to permit said drums to return to non-indicating position.

18. In a dispatcher system, a plurality of stations and means for placing two of said stations in electric connection with each other, a plurality of indicator drums associated with each station, means tending to hold each such drum in non-indicating position, a magnet associated with each indicator drum, ka lever controlled by said magnet and adapted to rotate said drum a predetermined distance in response to each movement of the lever, holding means adapted to prevent retrograde movement of the drums, an electric circuit for each such magnet, signaling means associated with each said station and means responsive to the actuation of said signaling means for closing and breaking said magnet circuits, and reset means, associated with each station, adapted when actuated, to withdraw said holding means and to permit the return of said drums to their original non-indicating position, and reset actuating means, associated with each station, and adapted to actuate the reset means of a station with which it is in connection, whereby a new series of signals may be transmitted.

19. In a two-way message transmitting apparatus, a plurality of units each adapted to send and to receive messages, a central station incorporating one of said units, a sub-station comprising one of said units, calling means in said stations, connecting means in the central station adapted to establish connection with said substation, message transmitting means in each station, adapted to transmit complete messages, comprising the permutation and combination of a group of characters, said means including an electric impulse generator, a series of reference characters associated with said generator, to designate the message, a series of drums rotatable responsive to the electric impulses to predetermined position according to impulse, a series of characters fixed upon said drums, corresponding to the characters upon said impulse generator, and means for operating said drum series simultaneously at both connected stations.

20. In a two-Way message transmitting apparatus, a plurality of units each adapted to send and to receive messages, a central station incorporating one of said units, a sub-station, comprising one of said units, calling means in said stations, connecting means in the central station adapted to establish connection With said substation, substantially identical message transmitting means in each station, adapted to transmit complete messages, comprising the permutation Vand combination of a group of characters, said each adapted to send and to receive messages, a central station incorporating one of said units, a plurality of substations comprising one of said units, calling means in said stations, selective connecting means in the central station adapted to establish individual connection With each of said substations, substantially identical message transmitting means in each station, adapted to transmit complete messages, comprising the permutation and combination of a small group of simple characters, said means including an electric impulse generator, a series of reference characters associated with said generator, to designate the message, a series of drums rotatable responsive toy the electric impulses, to predetermined position according to impulse groups, a series oisimple characters ixed upon said drums, correspending to the characters upon said impulse generator, and means for operating said drum series simultaneously at both connected stations. ARCH D. ROLLINS. 

